DP is a feel good maintenance item. If it makes you feel the engine runs better then it works. In reality its 70% diesel in a can.

Is it recommended so much just to boost sales? Not being a smart "a", I really want to know.... Thanks

If they imagine you'll buy it...They'd put 25 year old horse p*** in a can and
Label it Almighty Diesel Curative.

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'84 300SD sold
124.128

Almighty Diesel Curative?? Is it available at pepboys? Maybe I'll get 35 mpg by using ADC. I need a case.

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1982 240 D, 308,000 - 321,127 miles (sold)
1982 300 TD,166,500 - 226,000 miles
1998 E 320, 120,000 - 144,000 miles
2005 C 230 K, 26,000 - 77,000 miles (sold)

70% Diesel? My most recent cans first ingredient is Naptha. Or rather, the first list on the "contents" list - Can't find the MSDS. Can someone produce?

Now, what is Naptha? That seems to be a confusing matter.

Bottom line seems to be that it seems to be a solvent, maybe it does something for cleaning out sludge. But a miracle in a can, it is not.

Maybe it also does something for raising the combustion chamber temperatures? Burn off/blow out a little extra carbon around the rings, valves, etc.?

For the price of one 500ml can of Lubro Moly, you can buy a gallon of "Naptha" at Home Depot/Ace.

Time to make a recipe. Or shun it as "snake oil"?

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Vehicles:
2002 SLK 230
Gone but not forgotten:
1983 300D
1981 El Camino 'OILBRNR' - 6.2L diesel
OM617 powered '86 F150
1984 BMW 524td
2001 VW Beetle TDI
1994 Sunurban 4x4 6.5L diesel

Don't know about the snake oil comment. The comment about needing to rework the injectors is probably valid.
I can tell you I did a DP on my 84 300SD yesterday and there was a noticable improvement in the engine running, it idles smother and isn't as noisy as before. How long it will last I haven't a clue. I do intend to either rework the injectors or replace them but the DP did make difference.
Darrell